Harris: Male antennule of porcellidiid copepods 
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Figure 5. Ravania doliocauda sp. nov. Female: (A) adult; (B) genital double-somite and caudal rami; (C) genital double-somite (ventral); 
(D, E) Genital opening (superficial and deep focus); (F) cephalosome border (hy.so. hyaline border sense organ; mg. d. marginal gland 
duct; mg.o. opening to marginal gland). Scale bar: A = 0.45 mm. B, C = 0.15 mm. D, E = 0.06 mm. F = 0.08 mm. 
impossible. Various methods using detergents, enzymes and destroys the fine structure of setae and setules. 
ultrasonic vibration have been used with varying success to Apart from their tolerance to a muddy environment, this 
clean the animals before dissection, but such treatment often species can survive wide environmental temperature and 
